Gnus tip: how to convert a reply to a wide reply

This tip comes form the gnus mailing list from almost two years ago. I re-discover it today because, after writing a long email for a mailing list, I needed to change my original reply to a wide reply.

This is as easy as this:

Keybinding: `C-c C-f w'

Description: Insert `To' and `Cc' headers as if you were doing a wide reply even if the message was not made for a wide reply first.

The link for the original message is here